The relationship between stress and cancer is the source of many ongoing studies. Here’s a snapshot view of some relevant findings.
However, a more recent 2017
A large 2016
Overall, there still isn’t enough conclusive evidence to definitely say whether stress causes cancer or even increases someone’s risk.
indirect vs. direct causes
Even in cases where there does appear to be a link between stress and cancer, it’s still unclear whether stress contributes directly or indirectly.
- Someone under chronic stress takes up smoking as a means of relief. Is it the stress or the smoking that increases their risk of cancer? Or is it both?
- Someone experiences chronic stress for several years while caring for a family member with cancer. Down the line, they develop cancer themselves. Was stress a factor? Or was it genetics?
As experts begin to better understand both cancer and stress individually, we’ll likely learn more about how the two relate to each other, if at all.
Source : https://www.healthline.com/health/can-stress-cause-cancer